Trane
ZN.520, Tracer Unit Ventilator
manual
More complex data sharing application
Troubleshooting
Specifications
Install
Typical Wiring Diagram-Unit
Default
Occupied Bypass Timer
Wiring
Maintenance
Communication Configurations
Diagnostics
Page 44
Unit Operation
Figure 24: More complex data sharing application
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Page 45
Contents
Installation Owner Diagnostics
Tracer ZN.520 for Classroom Unit Ventilator
Start-up Procedures
Installation of New Units
Power Up Sequence
General Information
Tracer ZN.520 Overview
General Information
Controller Circuit Board Features
Tracer ZN.520 unit controller circuit board
Typical Components
Controller Features
Service
Integrated Comfort System
Communication Configurations
Peer-to-Peer Communications
Interoperability
Stand-Alone
Communication Interface
End Device Specifications
Characteristic
Standard End Devices
Description
Standard End Devices
Way Control Valve Time clock Zone sensor
Dpdt
Control Transformer
Installation and Wiring
Specifications
Binary Inputs
Binary Outputs
Generic/baseboard Heat Binary Output
Analog Inputs
Analog inputs
Mounting
Vertical classroom unit ventilator end pocket
Wiring
Power
Installing the Wall- Mounted Zone Sensor Optional
Proper zone sensor placement
Humidity and CO2 Sensors
Typical Wiring Diagram-Wall Mounted Zone Sensor
Typical Wiring Diagram-Unit Mounted Zone Sensor
Typical Wiring Diagram-Unit
Input/Output Summary
Input and output summary
Input/Output Summary
Configuration
Configurable parameters
Cooling source
Heating source
Binary Outputs1
Binary input summary Configuration
Binary Inputs1
Analog Inputs1
Analog input summary
Fan Configuration
End Device Configurations
Fan configuration ranges
Default
Setpoint defaults Default Valid range
Discharge air limit ranges Default Valid range
Setpoints
Discharge Air Limits
Maintenance Timers
Occupied Bypass Timer
Power-Up Control Wait
Winking
Location Identifier
Unit Identification Tag
Power-Up
Unit Operation
Heating And Cooling Changeover Logic
Occupancy
Heat/Cool Changeover logic
Fan Off Delay
Cooling Operation
Heating Operation
Fan Operation
Valve Operation
Face-and-Bypass Damper Operation
Exhaust fan/damper operation
Modulating Valves
Entering Water Temperature Sampling
Water assumption chart
Unit Configuration
Temperature Assumed1
Economizer Operation
DX Operation
Electric Heat Operation
Baseboard Heat Operation
Filter Status/ Maintenance Timer
Output Overrides
Fan Status
Other Modes
Data Sharing-LonWorks
Simple data sharing application
More complex data sharing application
Heating And Cooling Changeover Logic
Heat/Cool Changeover logic
Cooling Operation
Valve Operation
Entering Water Temperature Sampling
Economizer Operation
Output Overrides
Data Sharing-LonWorks
More complex data sharing application
Troubleshooting
Red Service LED
Black Service Push Button
Yellow Comm LED
Test Procedure
Exit6
Troubleshooting
Space Temperature Failure
Entering Water Temperature Failure
Discharge Air Temperature Limit
Outdoor Air Temperature Failure
Diagnostics
Troubleshooting
Translating Multiple Diagnostics
Rover service tool
Fans
Valves stay open Probable cause Possible Explanation
Valves
Valves stay closed Probable cause Possible Explanation
Outdoor air damper stays closed Probable cause Explanation
DX/Electric Heat
Outside Air Damper
Outdoor air damper stays open
Probable Cause Explanation
Tracer ZN.520 Unit Controller Replacement
Replacing Circuit Boards
Hardwired Setpoint Adjustment
Fan Switch Resistance Values
Hardwired Thermistor Values
Appendix
Appendix-Binary Configuration
Binary Configuration
Binary configuration details Binary input or output
Function
Heat/cool mode input NviHeatCool
Effective heat/ cool mode output nvoHeatCool
Appendix-Unit Operation
Unit Operation Based On The Effective HEAT/COOL Output
Appendix-Unit Operation
Configuration properties1
Appendix-Data Lists
Data Lists
Input/output listing1
Setting the Time Clock
Appendix-Timeclock
Set the Time and Day
Set the Program
Review and Change Programs
Override Program Manual Operation
Appendix-Timeclock
Appendix-Location Identifier
Location Identifier
Location Identifier
Location Identifier
Trane Company
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